What’s Vulnerable › Vulnerabilities

CVE-2026-9787: Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-10-25
• Weakness: CWE-78

Description

Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the processing of NVBULogDaemon JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-27625.

Affected products

• Quest NetVault Backup: before 14.0.2 — fixed in 14.0.2

How to fix

Upgrade to a fixed version: Quest NetVault Backup 14.0.2. Check the vendor advisory for mitigations.

References

• https://support.quest.com/technical-documents/netvault/14.0.2/release-notes#TOPIC-2338529
• https://www.zerodayinitiative.com/advisories/ZDI-26-376/

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